/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/MeshWeights.h
Compute cotan-weighted centroid of a vertex one-ring, with some weight analysis/clamping to avoid vertices getting "stuck" in explicit integration/iterations. If failure is detected, Uniform centroid is returned, which does cause some tangential flow
static FVector3d CotanCentroidSafe ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, int32 VertexIndex, double DegenerateTol, bool * bFailedToUniform )